the NRO is the craziest US government agency. iirc all their workers are contracted and all their expenses are highly classified. About the KH-11, trump accidentally tweeted an image from one of them (see https://www.forbes.com/sites/jonathanocallaghan/2019/09/01/t...) and its resolution was an international incident. This technology was developed in the 70s. The NRO has sci-fi technology.
See under "size and mass" at: https://en.wikipedia.org/wiki/KH-11_KENNEN
According to that page, NASA moved the primary mirror diameter from 3.0m to 2.4m to match the already-developed mirror-making technology.